Conveying device



C. PEDERSEN.

CONVEYING DEVICE.

APRLICATION FILED'MAR. 4. 1920.

Patented June 15, 1920.

2 SHEETS-SHEET l Z-wVen/faf:

a rffew je Zersen/ C. PEDERSEN.

CONVEYING DEVICE.

APPLICATION FILED MAR. 4. 1920.

Patented June 15, 1920. l y I 2`HEETSSHEET 2- I I f i 5N E -Y o L' IIIIIIIIIIIIIIIIIIIIII grates,

UNITED STATI-:ls

PATENT .oFFlcI-L.'

CARSTENPEDERSEN, 0F COPENHAG'EN, DENMARK.

CONVEYING DEVICE. I

To all whom t may concern.'

Be it known that I, CARs'rEN PEDnRsEN, a subject of the King of Denmark,residing at Copenhagen, Denmark, have invented new and usefulImprovements in Conveying Devices; and I do hereby declare the followingto be a full, clear, and exact description of the same. y

The invention relates to a conveying device lof the kind comprising 'aplurality of each grate being movable vertically and horizontally inrelation to thel other and arranged in a horizontal or slightly slopingposition, the individual bars of each grate being interposed with andmovable between the bars of the other grate, so that the material orarticles tobe conveyed placed on the grates are moved a disk tancealternately by one and the other of the grates.

A feature of the present invention is the provision of separate meansfor causmg lthe vertical movement independent of the means for causingthe horizontal movement withthe result that a simpler and more reliabledevice is produced.

For this purpose each grate is supported in a substantially horizontalplane by cams engaging shoes carried by the grates so that at therotating movement of the cams the grates are alternately moved up anddown, the shoes being adapted to slide on the cams during thereciprocating movement of 'the grates. The movement may be effected bytwo or more eccentrics or cam disks rotating in lguides or forks securedto the grates,l which forks permit the vertical movement-of the grates.,l

One form of the apparatus according to this invention is shown in thedrawing, laccompanying Ain which- Figure 1 represents a side view andpartial section of the apparatus, some details being omitted.

Fig. 2 shows the same in section.

Fig. 3 shows the same in bottom plan View.

Fig. 4 shows` one of the forks which are secured to the grates.

Fig 5 shows one of the shoes which are secured to the grates.

One grateconsists of ka number of parallel bars'yarl arranged in thespaces'between the parallel bars a of the other grate. The bars a aremounted on the top of .the teeth of two broader combs c.

Specification of Letters Patent. Patented. June 15, 1920.

. Application filed March 4, 1920. Serial No. 363,133.

all of which are secured on the under side of two longitudinal beams d,the upper edges of which extend higher than the laths a and thus serveforkeeping in place on the grates the objects to be conveyed.

teeth of two narrow combs b and two cured crosswise on top of twolongitudinal beams d".

It will be understood that the parts a, b, c and d form a unit as d0 theparts a', b', c and d', and therefore, owing to the special arrangementof the bars, the two grates are movable relatively to one anotherthrough a limited distance up and down as well as forward and backward.

In the form of the invention shown the up and down movement of thegrates is effected in the :following manner:

The grate a-ol is provided with four shoes e secured to the underside ofthe combs c, which shoes can slide on the circumference of cam disk f.The grate d has in a similar Ymanner four shoes e which can slide on thecircumference of cam disks f. The four cam disks f and f at one end ofthe apparatus are secured on a shaft g which is journaled in fixedbearings and which mounted on a common shaft h which is connected withthe shaft g by a sprocket chain 7s which is laid over two sprockets Z.The

vcamv disks f and f are alike; but on each shaft the two'cam disks f aredisplaced 180 in relation/ td the two cam disks j so as toalternatelybecome effective to raise the grates,

All these combs are se l 60 The bars a. are mounted on the top of the uIn order to reciprocate. the grates, which y movement is permitted bythe sliding contact of the shoe e, e', and the disks f, 7"` I a fork lm,is secured on the comb c at one end of the apparatus, which fork engagesan eccentric n secured on the shaft with two vertical sliding edges.In'a similar manner, a fork m is secured to the comb c embracing an'eccentrica on the same shaft. The two eccentrics are displacedl180 inrelation to one another as shown in Fig. 1, so as to alternately becomeeffective to move the grates longitudinally. v

The two rates with their shoesand forks can ,be lifte up from theeccentrics and the cam disks and therefore can be easily removedforrepair or substitution of new grates.

The circumference of each cam disk f and j is appropriately shaped astwo circle arcs of different diameters, which arcs are connected byshort oblique edges, whereby each grate is advanced exactly horizontallywhen in its uppermost position, and'is moved exactly horizontallybackward when in its lowermost position. in such a manner that `the twogrates alternately -advance the objects to be conveyed placed on thegrates a distancein horizontal direction which is effected quite evenly.A

The movements of thel grates in vertical and horizontal directions canbe effected in any other suitable manner within the scope of the annexedclaims without departing from the spirit of this invention.

The apparatus'constructed according to the invention may be used forvarious purposes, for instance as an automatic Stoker for steam boilersand similar purposes.

The utility of the invention, however, is not restricted to anyparticular art.

In the form shown the up and down;

movement of the grates is effected by revolving cam disks; the same maybe substituted by other means, for instance, a number of rocking armsprovided with rolls at top on which the grates are resting. The rockingarms the fulcrums of which are found beneath the rolls can for instancebe swung forward and backward by means of connection rods and cranks'.

I claim as my invention:

1. A conveying device comprising in .com-

i bination, a plurality of horizontal grates eac-h comprising spacedbars, the bars of one grate being interposed with and movable betweenthe bars '0f the other grate; means for alternately'moving the gratesvertically; 4

and `means separate from the last named means for horizontallyreciprocating the grates alternately.

2. A conveying'device comprising in combination, a plurality'ofhorizontal 'grates ,each comprising spaced bars and comblike supportingbars for securing the spaced bars together, the bars of onegrate being-interposed with and movable between the bars of the other grate; meansfor alternately moving the grates vertically; and means separate fromthe last named means for 5i horizontally reciprocating thegrates'alternately.

3. A conveying device comprising in combination, a plurality ofhorizontal grates each comprising spaced bars, the bars of one gratebeing interposed with and movable between the bars of the other grate;shoes carried by the grate; cam4 disks adapted to engage said shoes formoving said grates vertically in alternation; and separate means forreciprocating the grates alternately horizontally.

.4. A conveying device comprising in combination, a plurality ofhorizontal' grates, each comprising spaced bars, the bars of each gratebeing interposed with and movable between the bars of the other grate;means for moving said grate vertically in alternation; and separatemeans for recipro-l cating the grates alternately lhorizontallycomprising forks carried by the grates and ecoentrics adapted to engagein said forks.

5. A conveying device comprising in-combination, a plurality of grateseach comprising spaced bars, the bars of one grate being interposed withand movable between the bars of the other grate; shoes carried by thegrates; ca-m disks for engagin vsaid shoes for moving said gratesvertica ly in alternation, said cam disks each having two circularportions one of shorter radius than the other; and separate means formoving-the grates alternately horizontally.

6. `A conveying device comprising in combination, a plurality vofhorizontal gratesgo each. comprising spaced bans, the bars of one"lgrate being interposed wlth and movable.

between the bars of the other grate; shoeshx f hciprocating the gratesalternately horizon'-v i tally.-

In testimony whereof I have aiixed my signatureyin presence of two,witnesses CARSTEN PEDERSEN.

Witnesses: y `F. PETERSEN,

K. YENSEN.

